Self-adaptive brightness adjustment circuit and solar inner red dot sight
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United States of America Patent
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Aug 23, 2022
Grant Date -
Aug 26, 2021
app pub date -
Nov 22, 2019
filing date -
Dec 20, 2018
priority date (Note) -
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Abstract
A solar inner red dot sight includes a body, a power supply and a solar cell arranged on the body, a control circuit board and an LED light-emitting chip arranged on or in the body, a photoelectric sensor arranged on a side of the LED light-emitting chip, wherein the photoelectric sensor is used to collect illuminance signals of a shooting target or surroundings thereof; the control circuit board obtains power supplied to the LED light-emitting chip according to the signals of the solar cell and the illuminance signals of the photoelectric sensor, and compares the power with the solar energy, when the solar energy is less than the power energy, the control circuit board turns on the power supply to power the LED light-emitting chip; or when the solar signal is strong, the LED light emitting chip is powered by the solar cell only.
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